AMD Ryzen 9 7940H vs AMD Ryzen 9 7845HX

Comparative analysis of AMD Ryzen 9 7940H and AMD Ryzen 9 7845HX processors for all known characteristics in the following categories: Essentials, Performance, Memory, Compatibility, Peripherals. Benchmark processor performance analysis: PassMark - Single thread mark, PassMark - CPU mark, 3DMark Fire Strike - Physics Score.

 

Differences

Reasons to consider the AMD Ryzen 9 7940H

  • A newer manufacturing process allows for a more powerful, yet cooler running processor: 4 nm vs 5 nm
  • Around 57% lower typical power consumption: 35 Watt vs 55 Watt
Manufacturing process technology 4 nm vs 5 nm
Thermal Design Power (TDP) 35 Watt vs 55 Watt

Reasons to consider the AMD Ryzen 9 7845HX

  • Processor is unlocked, an unlocked multiplier allows for easier overclocking
  • 4 more cores, run more applications at once: 12 vs 8
  • 8 more threads: 24 vs 16
  • Around 50% more L1 cache; more data can be stored in the L1 cache for quick access later
  • Around 50% more L2 cache; more data can be stored in the L2 cache for quick access later
  • 4x more L3 cache, more data can be stored in the L3 cache for quick access later
  • Around 59% better performance in PassMark - CPU mark: 45644 vs 28660
Specifications (specs)
Unlocked Unlocked vs Locked
Number of cores 12 vs 8
Number of threads 24 vs 16
L1 cache 64K (per core) vs 64K (per core)
L2 cache 1MB (per core) vs 1MB (per core)
L3 cache 64MB (shared) vs 16MB (shared)
Benchmarks
PassMark - Single thread mark 3963 vs 3956
PassMark - CPU mark 45644 vs 28660

Compare benchmarks

CPU 1: AMD Ryzen 9 7940H
CPU 2: AMD Ryzen 9 7845HX

PassMark - Single thread mark
CPU 1
CPU 2
3956
3963
PassMark - CPU mark
CPU 1
CPU 2
28660
45644
Name AMD Ryzen 9 7940H AMD Ryzen 9 7845HX
PassMark - Single thread mark 3956 3963
PassMark - CPU mark 28660 45644
3DMark Fire Strike - Physics Score 11279

Compare specifications (specs)

AMD Ryzen 9 7940H AMD Ryzen 9 7845HX

Essentials

Launch date Jan 2023 4 Jan 2023
Place in performance rating 181 148
Architecture codename Zen 4
Family Dragon Range

Performance

Base frequency 4 GHz 3 GHz
Die size 178 mm² 2x 71 mm²
L1 cache 64K (per core) 64K (per core)
L2 cache 1MB (per core) 1MB (per core)
L3 cache 16MB (shared) 64MB (shared)
Manufacturing process technology 4 nm 5 nm
Maximum core temperature 100°C 100°C
Maximum frequency 5.2 GHz 5.2 GHz
Number of cores 8 12
Number of threads 16 24
Transistor count 25,000 million
Unlocked

Memory

ECC memory support
Supported memory types DDR5-5600 MHz, Dual-channel DDR5-5200 MHz, Dual-channel

Compatibility

Configurable TDP 54 Watt
Max number of CPUs in a configuration 1 1
Sockets supported FP8 FL1
Thermal Design Power (TDP) 35 Watt 55 Watt

Peripherals

PCIe configurations Gen 4, 20 Lanes, (CPU only) Gen 5, 28 Lanes, (CPU only)